Kawasi weather in September

In September, Kawasi sees average daytime highs of 27°C and overnight lows near 24°C, with 195 mm of rain across 19.9 wet days and about 12 hours of daylight. It is the 9th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 11% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Kawasi's 2nd-clearest and 5th-windiest month. For the whole year in context, see Kawasi's year-round climate.

Daytime high
27°
9th warmest
Overnight low
24°
3rd coldest
Rainfall
195 mm
19.9 wet days
Daylight
12 hours
6:25 AM – 6:24 PM
Cloud cover
72%
2nd clearest
Wind
10 km/h
5th windiest
Solar energy
6.04 kWh/m²
Travel score
4.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Kawasi reaches about 27°C in the afternoon and slips back to 24°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 27°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12623
22623
32623
42623
52623
62623
72623
82623
92623
102623
112723
122723
132724
142724
152724
162724
172724
182724
192724
202724
212724
222724
232724
242724
252724
262724
272724
282724
292724
302724

Kawasi weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 24°29328.312.13.6
Feb27° / 24°25324.712.13.7
Mar27° / 24°32527.9123.7
Apr27° / 24°34028.5123.5
May27° / 24°30426.311.94.0
Jun27° / 24°30224.411.94.2
Jul26° / 24°23822.111.94.7
Aug26° / 23°18217.611.95.3
Sep27° / 24°19519.9124.9
Oct27° / 24°20721.7124.6
Nov27° / 24°24225.912.13.9
Dec27° / 24°29429.212.13.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13070
22971
32971
42872
52773
62773
72674
82674
92674
102674
112674
122575
132575
142575
152674
162674
172773
182872
192872
202773
212872
222872
232872
242872
252872
262971
272971
282971
292971
302971

Chance of precipitation in September

Any precipitation

Kawasi gets around 195 mm of rain over 19.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 66% and peaks near 68% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
165
266
366
466
567
667
767
867
968
1068
1168
1268
1368
1468
1568
1667
1767
1867
1966
2066
2166
2266
2365
2465
2565
2665
2765
2865
2966
3066

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
11090
21090
31090
41090
51090
61189
71189
81189
91189
101189
111189
121189
131189
141189
151189
161189
171189
181090
191090
201090
21991
22991
23991
24991
25892
26892
27892
28892
29892
30892

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 hours at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over September. Sunrise moves from 6:31 AM to 6:19 AM, and sunset from 6:29 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:316:29
212.06:316:29
312.06:306:29
412.06:306:28
512.06:296:28
612.06:296:28
712.06:296:27
812.06:286:27
912.06:286:27
1012.06:276:26
1112.06:276:26
1212.06:276:26
1312.06:266:25
1412.06:266:25
1512.06:256:25
1612.06:256:24
1712.06:256:24
1812.06:246:24
1912.06:246:23
2012.06:236:23
2112.06:236:23
2212.06:226:22
2312.06:226:22
2412.06:226:22
2512.06:216:22
2612.06:216:21
2712.06:206:21
2812.06:206:21
2912.06:206:20
3012.06:196:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.04 kWh/m².

For context, solar energy here swings from a low near 5 kWh/m² to a high of 6.24 kWh/m² in October across the year — September's 6.04 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
96.0Bright
106.0Bright
116.0Bright
126.0Bright
136.0Bright
146.0Intense
156.0Intense
166.0Intense
176.0Intense
186.0Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Is September a good time to visit Kawasi?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.9
Sightseeing
2nd-best month of the year
4.8
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Kawasi for sightseeing.

What to pack for Kawasi in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Kawasi sees daytime highs around 27°C and nights near 24°C. Pack rain gear and sun protection. Worth having: light clothes. About 20 days see rain.

rain gearsun protectionlight clothes

Sea temperature near Kawasi in September

The nearest coast averages about 28°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in April at about 29°C and coldest in August near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul28Warm
Aug28Warm
Sep28Warm
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Kawasi in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kawasi peaks around February 20 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 11 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 20UV 16Jul 12UV 11
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar16Extreme
Apr14Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep14Extreme
Oct15Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Kawasi?

Kawasi sits at 1.6°S, 127.4°E, 3 m above sea level, in Indonesia. The nearest listed city is Sanana, 167 km away.

Topography around Kawasi

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kawasi.

Within 3 km, the terrain around Kawasi has only modest variations in elevation — a maximum elevation change of 121 m around an average of 16 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 759 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,553 m.

The land around Kawasi is covered by trees (47%) and water (46%) within 3 km, water (57%) and trees (39%) within 16 km, and water (79%) and trees (20%) within 80 km.

3 km
121 m
16 km
759 m
80 km
1,553 m
treesgrasslandbare terrainwater
September weather nearby: Sanana 167 km · Namlea 189 km · Ambon 249 km · Amahai 257 km · Masohi 257 km · Sofifi 259 km · Namrole 262 km · Ternate 265 km

Indonesia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,060
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.3
per 100k, 2022
Road deaths
11.3
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 471
Religion
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Kawasi (-1.5912°, 127.4071°, elevation 3 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).